US 12,287,191 B2
Measurement device and measurement method for measuring roundness of coating roll for manufacturing battery
Jae Young Sung, Daejeon (KR); Joon Sun Park, Daejeon (KR); Chae Gyu Lee, Daejeon (KR); Duck Joong Yun, Daejeon (KR); Jeong Yong Lee, Daejeon (KR); Woo Jin An, Daejeon (KR); Koo Youn Hwang, Daejeon (KR); Won Hak Cho, Daejeon (KR); and Jin Ki Han, Daejeon (KR)
Assigned to LG Energy Solution, Ltd., Seoul (KR)
Appl. No. 17/914,616
Filed by LG Energy Solution, Ltd., Seoul (KR)
PCT Filed Jan. 5, 2022, PCT No. PCT/KR2022/000163
§ 371(c)(1), (2) Date Sep. 26, 2022,
PCT Pub. No. WO2022/154362, PCT Pub. Date Jul. 21, 2022.
Claims priority of application No. 10-2021-0004364 (KR), filed on Jan. 13, 2021.
Prior Publication US 2023/0118174 A1, Apr. 20, 2023
Int. Cl. G01B 21/12 (2006.01); H01M 10/04 (2006.01)
CPC G01B 21/12 (2013.01) [H01M 10/0404 (2013.01)] 14 Claims
OG exemplary drawing
 
1. A roundness measuring device of a coating roll that supports an electrode sheet when the electrode sheet is coated with an electrode slurry, the roundness measuring device comprising:
a displacement sensor spaced apart from the coating roll and configured to measure roundness of the coating roll in a non-contact manner;
a support member on which a displacement sensor is installed, wherein the support member extends in a length direction of the coating roll, and
a linear movement mechanism configured to move the displacement sensor forward and backward to allow the displacement sensor to approach and be separated from the coating roll,
wherein the displacement sensor includes a plurality of displacement sensors on the support member in the length direction of the coating roll, and
wherein the linear movement mechanism is mounted on the support member.